1 files changed, 94 insertions, 0 deletions
diff --git a/src/3d/renderer_skybox.cc b/src/3d/renderer_skybox.cc
new file mode 100644
index 0000000..203cc07
--- /dev/null
+++ b/src/3d/renderer_skybox.cc
@@ -0,0 +1,94 @@
+// This file is part of the 64k demo project.
+// It implements the skybox pipeline for Renderer3D.
+
+#include "3d/renderer.h"
+#include "generated/assets.h"
+#include "gpu/effects/shader_composer.h"
+#include "util/asset_manager.h"
+
+void Renderer3D::create_skybox_pipeline() {
+  WGPUBindGroupLayoutEntry entries[3] = {};
+  entries[0].binding = 0;
+  entries[0].visibility = WGPUShaderStage_Fragment;
+  entries[0].texture.sampleType = WGPUTextureSampleType_Float;
+  entries[0].texture.viewDimension = WGPUTextureViewDimension_2D;
+
+  entries[1].binding = 1;
+  entries[1].visibility = WGPUShaderStage_Fragment;
+  entries[1].sampler.type = WGPUSamplerBindingType_Filtering;
+
+  entries[2].binding = 2;
+  entries[2].visibility = WGPUShaderStage_Fragment;
+  entries[2].buffer.type = WGPUBufferBindingType_Uniform;
+  entries[2].buffer.minBindingSize = sizeof(GlobalUniforms);
+
+  WGPUBindGroupLayoutDescriptor bgl_desc = {};
+  bgl_desc.entryCount = 3;
+  bgl_desc.entries = entries;
+  WGPUBindGroupLayout bgl = wgpuDeviceCreateBindGroupLayout(device_, &bgl_desc);
+
+  WGPUPipelineLayoutDescriptor pl_desc = {};
+  pl_desc.bindGroupLayoutCount = 1;
+  pl_desc.bindGroupLayouts = &bgl;
+  WGPUPipelineLayout pipeline_layout =
+      wgpuDeviceCreatePipelineLayout(device_, &pl_desc);
+
+  const uint8_t* shader_code_asset =
+      GetAsset(AssetId::ASSET_SHADER_SKYBOX, nullptr);
+  std::string shader_source =
+      ShaderComposer::Get().Compose({}, (const char*)shader_code_asset);
+
+#if defined(DEMO_CROSS_COMPILE_WIN32)
+  WGPUShaderModuleWGSLDescriptor wgsl_desc = {};
+  wgsl_desc.chain.sType = WGPUSType_ShaderModuleWGSLDescriptor;
+  wgsl_desc.code = shader_source.c_str();
+  WGPUShaderModuleDescriptor shader_desc = {};
+  shader_desc.nextInChain = (const WGPUChainedStruct*)&wgsl_desc.chain;
+#else
+  WGPUShaderSourceWGSL wgsl_desc = {};
+  wgsl_desc.chain.sType = WGPUSType_ShaderSourceWGSL;
+  wgsl_desc.code = str_view(shader_source.c_str());
+  WGPUShaderModuleDescriptor shader_desc = {};
+  shader_desc.nextInChain = (const WGPUChainedStruct*)&wgsl_desc.chain;
+#endif
+  WGPUShaderModule shader_module =
+      wgpuDeviceCreateShaderModule(device_, &shader_desc);
+
+  WGPURenderPipelineDescriptor desc = {};
+  desc.layout = pipeline_layout;
+  desc.vertex.module = shader_module;
+#if defined(DEMO_CROSS_COMPILE_WIN32)
+  desc.vertex.entryPoint = "vs_main";
+#else
+  desc.vertex.entryPoint = {"vs_main", 7};
+#endif
+  WGPUColorTargetState color_target = {};
+  color_target.format = format_;
+  color_target.writeMask = WGPUColorWriteMask_All;
+  WGPUFragmentState fragment = {};
+  fragment.module = shader_module;
+#if defined(DEMO_CROSS_COMPILE_WIN32)
+  fragment.entryPoint = "fs_main";
+#else
+  fragment.entryPoint = {"fs_main", 7};
+#endif
+  fragment.targetCount = 1;
+  fragment.targets = &color_target;
+  desc.fragment = &fragment;
+  desc.primitive.topology = WGPUPrimitiveTopology_TriangleList;
+  desc.primitive.cullMode = WGPUCullMode_Back;
+  desc.primitive.frontFace = WGPUFrontFace_CCW;
+  desc.multisample.count = 1;
+  desc.multisample.mask = 0xFFFFFFFF;
+
+  WGPUDepthStencilState depth_stencil = {};
+  depth_stencil.format = WGPUTextureFormat_Depth24Plus;
+  depth_stencil.depthWriteEnabled = WGPUOptionalBool_False;
+  depth_stencil.depthCompare = WGPUCompareFunction_Always;
+  desc.depthStencil = &depth_stencil;
+
+  skybox_pipeline_ = wgpuDeviceCreateRenderPipeline(device_, &desc);
+  wgpuBindGroupLayoutRelease(bgl);
+  wgpuPipelineLayoutRelease(pipeline_layout);
+  wgpuShaderModuleRelease(shader_module);
+}